| Abstract |
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We search for strange pentaquark states that have been previously
reported by other experiments --- the Theta(1540)+,
Xi(1860)^--, and Xi(1860)^0 --- in 123~fb^{-1} of data
recorded with the BaBar detector at the PEP-II e^+e^- storage ring.
We find no evidence for these states and we set 95% confidence level
upper limits on the number of Theta(1540)^+ and Xi_5(1860)^{--}
pentaquarks produced per e^+e^- annihilation into qqbar and per
Upsilon(4S) decay. For qqbar events these limits are about eight
and four times lower, respectively, than the rates measured for
ordinary baryons of similar mass.
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